Mold for tile



May 15, 1928. 1,670,066

J. A. ERICKSON MOLD FOR TILE Filed sept. 9, 1927 2 Sheets-sheet 1 May 15, 1928. 1,670,066

J. A. ERICKSON MOLD FOR TILE Filed sept. 9, 1927 2 sheets-sheet 2 Patented vMary 15, 1928.

JoHNfA. ERICKSON, or EAST LANSINQMICHIGANS e .iM/011D non rrILn.v

Application sied' september 9,1927. serial Namasi.

'i This invention lrelates to mold for making 'concrete blocks and while the moldmay be used to make blocks of variousy types, it particularly is designed for 'use in'making hollow blocks I having linwardly extending flangesy about thev openings therethrough. In such blocks the cross section Vof they cavity in the blockv at its' largest partis of greater area than theopenings inthe ends of the block. It is therefore impossible to havefa core of fixedv dimensions which can bedrawn through one of said'lopenings. A collapsible'coreis thus necessary. If a' collapsible h,core is,used, which is drawn directly 'from thematerial of the block, the

saidy materiallis very apt to'stick `to the lcore andfbepulle'd away therewith, sothat holes 4 and rough places are formed in the block.

v Itis an object of this invention, therefore, to provide a mold havingr an outer casing anda collapsible core, which core comprises members. having surfaces engaging the inner side'ofthe block and which are moved to collapsed positiy 'n with a wiping or sliding movement Avover the inner side of theV blockn i It is 'another object of thisfinvention to provide a mold forconcrete'blocl; havinga` core comprising members having fixed surfaces vat opposite sides of the block and having movable collapsible-members at. the

other opposite sides of the block adapted ,to i

swing inwardly within the outlines of said iirst mentioned members. y

It is still another object of rvthe invention to provide a mold for a concrete block having a core comprising walls with fixed sur-l faces at opposite sides of the blockwhich are movable rectilinearly through the opend he blockV and having members at the ing in opposite sides of the block comprising bars having surfaces meeting substantiallyv at they central part of theblock` to. forml wallsv of the core, said latter surfaces being convex and curving inwardly toward the openings in the ,sidesr ofthe block, together with means' for z swinging said portions inwardly with awiping movement over the yinner surfacesofthe block, to move the same within said rstmentioned'walls so `as to be moved out of the block therewith.

Y Itis stillfanthe'r object to4 provide a moldv havinga collapsible core having walls at opposite sides of the block,

movable out of the same through fthe opening 'inthe block, and walls-at theotheropa of .the invention v y .g A1,670,066, UNITED: STATES; PATENT OFFICE posite sides of the blockformedbycollaps-vv drawing said lirst mentioned walls connected to saidlmenibers by toggle links rwhereby said members are collapsed withinV the out-- n lines of'said first mentioned wall and'withdrawn therewith. t

Thesejandother objects and,

of the-invention will be fullyset forth "1n I the following description made in connec tion with the accompanying drawingsnin'` which like reference characters referto-sim-v ilar parts throughout the several 'views and inwhichzf-v Y t Fig.' 1 is a perspectiveview partlyinvertical section illustrating themold; i f

Fig. 2 is; a .transverse vertical section vthrough the mold taken l,substantially on line 2`2'of-Fig.,1; l l w v ,v Fig. 3 Ais a view similar to Fig. 2, showing kthe ctore of the mold collapsed and 'partially with-drawn Fig. l isa verticalsection taken 'on line i 4 4 Ofrige;

i Fig. 5 is a horizontal section .Online 5 5 of'Fig.`2; and 1 ,j 4 'fFig 6 is a view in perspective ofone of the blocks used, and'showingwan'other block y in vertical section. y l A t 1 i t v Referring to the drawings, a model is shown comprising an outer casing 10 and while this casingmay be of various shapes, in the vembodiment of the invention illustrated itis shown `asof rectangular shape, the 'same having the inwardlyv-exytendingtop and bottom iianges 10?* extending thereayboit: lA platen 11 is disposed within .the` lower'pfor'v-j tion of casing 10, adapted to be. elevated or' moved relativelyv to ,casing 10 by the bars .12.

The mold has a core comprising walls 13at i opposite sides thereof, which, inthe embodiment of the invention illustrated, are shown.

as .disposed at thesmallersides ory endsof the mold, ,The wallsk 13 are connected ,at

their upperportionsV bythe top wallorplate vhas beveledA ysides 4 13"l asv shown. v

The walls lphave'slots 13fin which r'nove' slotted members 14. The membersv leere 1a, which "pivotally connectedfattheir lower `ends to ivoted intermediately an operating lever'l` thepmembersfll to a xed l standard 16, said lever .15 'extending vat one side ofV one .ofthe l While the members-14 may be c variouslyformed to connect to the'lever members 14.

ler

)in the embodiment of the invention illustrated they are shown as being twisted through 90 at their lower ends for such attachment The walls 13 also'have extending therebetween at their lower l'corners the strips 17. Shafts 18eXt'end between and` have their ends ixed inthe walls I13. Oscillatably mounted on the shafts 18 are pairs of `members'l9 and 20. The membersk 19 and 20 'at each side ofthe core for-m a 4wall thereof, and inthe embodiment of the invention illustrated, these members formthe i longer o rsidewall.4 The Vouter,surfacesfof the members 19 ,as shown, curveupwardly and inwardly, and have their upper inner edges substantially in Contact with the lower edge ofthe sides 13b when the lcoreis in eX- tended position as shown fin Fig. 2. TheV outer Surfaces of the member` `20 curve' downwardly vand inwardly andl have their'endv edges substantially 'in contact with the edges 19 at. their sides have upwardly extendingI arms 19a and these arms are connected at opposite ends ofsaid members respectively by links 21to`" one ofthe members 14, tlie up-v i per end o fsaid members 14 being' offset int' respectively arealso connected by 'links 22 kli() wardl'y as shown Fig.A 1, Thev members 20, have downwardly extending arms 2Oal and these 'arms at opposite endsof said members tol one of the members 14. Themembers 19 and 20 'also' 'have end' surfaces 19b and 19 which project beyond the sid-es ofthe walls 3. vThese endv surfaces on' the members 19 and 2'0falso meet ina linevin" the" same plane as the kmeeting line of the side surfaces of Said IIimbers. c

In operation, the mold will be disposedfvin the position shown in Figs. 1 and 2.- The material will be placed between the casing' 10 and.v the `outer surfaces of the kkcore formed walls '13 vandjme'mbers 19 and 20. It will be seen' thatV an enclosed space is formed, which, vihen` iilled with concrete, forms the vblock 23, the lblock resting onthe platens 11. It

will be seenthat thel block has inwardly. exi

tending flanges 23a atv top and bottom which surround the openingslnthe top and bot tomthereof. When the block is to be re;

` moved from the mold, the lever 15' is' swung about ,itsl Ipiyotal 'connectionjwith ythe standfard ltand one of themembersf14is I'lfd' upwardly andthe other` moveddownwardly. The member moving downwardly swings the v ,links 21 downwardlyl andthroughfthearms 19d,Y swings the members 19 inwardly,aboutV yshafts v1'8 so that; they assume` the position shown in"Fig'. 3. The other member 14 vswings the links 2,2 upwardly so that vthrough arms 20a the members 2O yare also swung inwardly to the position shown in Fig. 3; The

directions of movement" of members 19 and 20 in lthe collapsing of .the core is indicated .by the arrows in Fig, 2. `When the mem'- bers 19 and 20,are in their .inward or collapsed positions,theyv are within the outlines ofthe wallswl?)` Aas shownv in Fig. 3. f y The ymembers 12 are then' fel'ev'atedfby' suitable mechanism and theplatens 11` are raised', thus removingi'theblock from Acasing 4 10 and moving thersame overthe collapsed core asshown in Fig. 3.y `When another block'i's'to, be made, the lever 15 isswung in' the opposite direction and the members 19 and 2() are then swung outwardly in the di-` rections indicated by thearrows in Fig. r3, vso thatfthese members assumekthe positions shown in Fig. 2, the platens "11being'rel turned to position shown, lso that themold :is-again in positionto receiver a block.' It will be noted thatwhen themembers 19 and 2O are moved to collapsed 'position, they swing in van arc Aand theouter surfaces *thereof move over the inner surfaces ofthe-block f vor `of` the concrete'A 'withla sliding or' wiping action. vThe links 21 and `22 form pairs of tog'gggles holding the members 19,v and 20:"in`

expandedy position," This actionis similar to that of atro'wel and with `suclian actio'rf thereis no dangerv .of 'thek concretejbeing the core.' A smooth and clean surface is thus left on the inner side of the block after 'the core is collapsed. I' s .t n,

.Thev shape ofthe blockinade is `clearly shown inthe. drawings, `partimlarly Fig. 6. It, will be seen that'there is an" o'ifset atfthie ends ofthe block between the surfaces made by the outenside'of the walls 13v and ther end surfaces of members 19 and 20'.

From the aboved'es'cr'iption it isseen that applicant has provided a've'ry simple and very eicient moldl for 'concrete or cement pulled away somit-e black hysteria-g lull i blocks'.t The 'moldhas a collapsing core Y which is ymoved to collapsing position a wiping. action so'thatno*"Vrriaterialis"` pulled away from the inner si'deof'the block.y The mechanism is very r simple in" construction and easilyand, quickly operat'ed.' The' device hasl been demonstrated vin actual practice and found to lbe verysuccessful and eij'oient;

It'will, of course, be understood that vari'- ous changes may be made `theforni, details",v arrangement land proportions of .the

parts, Withjna` departing from' the scope'- of' applicats invention, which, generally stated, consists ina device capable' of `carrying vout the tobjects above set for`th`,in' the novel parts andfcombinations 'of fined inthe' appended claims.`

What yis lclaimed is parts y'disclosed and de-v 1. AA mold for a hollow concretefbiek' 1 having in combination, an outer. casing,"a

core comprising inwardly collapsing walls and means for moving said walls to collapsed position with a sliding movemen(l over the inner surface of the block.

2. A mold for a hollow concrete block lhaving in combination, an outer casing, a

3. A. mold for a hollow concretey blockv having in combination, an Vouter casing, a core having `inwardly collapsing walls at opposite sides of said mold, comprising members having surfaces meeting substantially at the center of the block and curvedinwardly toward the opposite `surfaces of the block to form flanges onsaid block, and walls at the yother opposite Asides of said block within whichsaid members are collapsed, and means for swinging said members inwardly to collapsed position in a curved path.

4. A mold for a hollow concrete block having in combination, an outer casing, a core comprising walls at opposite sides of said block movable rectilinearly from said block, and members extending beyond said walls at the other opposite sides of said block to form flanges at opposite sides of said block, said members also having surfaces parallel to said first mentioned surfaces engaging said block, and means for swinging said members inwardly within the outlines of said walls whereby the block and core may be relatively moved rectilinearly. c

5. A mold for a hollow concrete block having in combination, an outer casing, a core comprising end walls with fixed sur.- lfaces, members forming side walls ofsai'd core having portions with surfaces meeting at substantially the center of said core, said portions of each member being pivoted about a common axis to swing in opposite directions, and means for swinging said portions yopposite ends thereof, said walls tocollapsed position within the sides of said end walls. y

6. A mold for a hollow concrete block Ahaving in combination, an outer casing, a

collapsible core comprisinor end walls with fixed surfaces, spaced shafts extending between said end walls and collapsible side walls, each comprising a plurality of -portions journaled on said shafts and swingable thereon in opposite directions, meansA for swinging said portions inwardlyL within the outlines of said end wallsto move the same to collapsed positionsai'd means comprising a vertically movable member, and linksconnecting the same to said portions.

V'2'. A mold for a hollow concrete block having in combination, an outer casing, a core f comprising rectilinearly movable walls at stantially rectangular in shape',supporting means carried by said walls andcollapsible walls swingingly mounted on said supporting means, said collapsible walls comprising separable sections having outer surfaces curved inwardly toward opposite surfaces.

of said block and'having inwardly extending arms, members movablevertically adjacent said firstl mentioned walls and links connected to said .members respectively and to said arms, said links adapted to form a togbeing subu gle to hold said collapsible core in expanded position.

8. The structure set forth in claim 7, a top member for said core extending between said rst 'mentioned Vwalls and contacting said collapsible core when in expanded position; c

9. The structure set forth in claim 7, a

top member extending between said first vmentioned. walls and between the tops of said collapsible walls and engaging the latter, and spaced'members extending between ysaid end walls and engagingthe bottom of said collapsible walls.

1n testimony wliereof I alfix my signature.F

' y J. aEnicKsoN. 

